Radio aerial



April 8 1930. v E. NEINFELDT 1,753,213

RADIO AERIAL Filed Feb. 6. 1928 6 nnnnnnnnnnnnnnnnnnnnnn 2 ZJVVE'NTOR.

.HTTOEJYE'K Patented Apr. 8, 1930 UNITED srars EMIL NEINFELDT, 0F

RADIO Application filed February My invention relates to a new and improved aerial device for radio receiving sets and theobject is to provide a simple, efficient and inexpensive aerial of a novel construction including certain predetermined quantities of wire as required for various kinds of receiving sets, as hereinafter described and illustrated in the accompanying drawing, in which,--

Fig. 1 is a top view of my improved aerial.

Fig. 2 is a vertical diametrical section of rlr iy improved aerial about as on line 2-2 in Fig. 3 is a modification of the lower part of Fig. 2 showing a base adapted to be mounted on a roof ridge.

Referring to the drawing by reference numerals my device comprises a vertical electroconductive metal column 5 the base of which may have various mounting means to be described, the upper part of said column being fixed diametrically within a globular cage made of wires 8. The upper end part of the column comprises a horizontal disc 5D in the perimeter of which is fixed a number of wires extending outwardly and downwardly in half-circle shape, the said wires spreading apart as the longitudes of a globe and all passing through a ring 6 at the widest part of the globe. 7 is a horizontal flan e on the column grooved outwardly as at 7 and the wires 8 are each bent near their lower ends to engage in said groove and be clamped therein by a suitable ring 9. Below said ring 9 each wire is extended outwardly to form an inwardly opening eye 8E the lower end of the wire terminating in proximity to the column 5. Each wire 8 is of course in a vertical plane throughout its entire length.

The size of the globular cage and the number of wires 8 are simply a matter of design governed by the number of feet of aerial wire required for a radio receiving set. For example, if sixty feet of aerial wire is neces sary for a certain receiving set, my device is provided in a size having that many feet of wire.

In Fig. 2 the base of column 5 is flared out and down in the form of a ferrule 5F adapted to frictionally engage the flanged upper part re s 10F of a plug 10 which is in reality a shank adapted to be fitted securely in the upper end of a cylindrical aerial post 11 which may be simply a pipe. The plug is bored centrally as 1013 for a cable 12 fixed in lower part of column 5 as at 12F and passed down centrally within pipe 11 as shown and thence to the radio receiving set (not shown).

In Fig. 3 the lower end of column 5 is of inverted V-shape as 5F mounted on a correspondingly shaped insulator 13 extending outwardly of base 5F and there securable to the ridge portion of a roof or gable 1 1 by means of nails 15 or equivalent. In this construction the lead in wire 12 may extend directly down as shown and thence into the building or the said wire may be attached as at 16 to the column and'extend thence outwardly of a building to the place where it is extended into it, the latter wire designated as 1215 in Fig. 3.

In Figs. 1 and 2, 17 designates a simple arrow shaped vane mounted pivotally at the top of colunm 5.

The use of my device has already been fully 7 disclosed and will be readily understood. Among its features is its use either as an outside or inside aerial, in the latter case being preferably mounted on a suitable portable stand (not shown). As an outside aerial it is particularly adaptable and efficient to catch broadcasted radio waves because of the wires being exposed in practically every conceivable angle. When using my aerial it is clear that the use of stretched wires or parallel wires extending considerable distances is entirely eliminated.

I claim:

A radio aerial comprising a globular wire cage, an electroconductive column with base 9 means adapted to be attached to a fixed object, said cage mounted concentric about the upper part of said column and comprising a series of wires radiating from the upper part of P3 the column, each wire in semi-circular formation and in a vertical plane, each said wire extending inwardly at its lower part and fixed to the column, and each wire extending outwardly from said lower fixed part thence downwardly and inwardly in open loop formation and its extremity in proximity to said column, said lower fixed part comprising an integral horizontal flange on the column formed with a perimetral groove to be engaged by the lower parts of the wires and a ring arranged to hold said wires in the groove. 7

In testimony whereof I aflix my signature.

EMIL NEINFELDT. 

